Home / 39,157.22-54,037-21,252.23

Finding the Fourth Proportional to 39,157.22, 54,037 and 21,252.23

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Solution

The fourth proportional to 39,157.22, 54,037 and 21,252.23 is: 29,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.22 : 54,037 = 21,252.23 : x
  2. Step 2: Convert to fraction form
    39,157.22/54,037 = 21,252.23/x
  3. Step 3: Cross multiply
    39,157.22x = 54,037 × 21,252.23
  4. Step 4: Simplify right side
    39,157.22x = 1,148,406,752.51
  5. Step 5: Solve for x
    x = 1,148,406,752.51/39,157.22
  6. Step 6: Final answer
    x = 29,328.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.